The article revisits the theory of hegemony of Ernesto Laclau and Chantal Mouffe and shows how a normative injunction, which according to Laclau is not compatible with the hegemonic logic, is not only possible but a necessary condition for hegemony to function. The article claims that the path to demonstrate this involves rethinking the relationship between the theory of hegemony and Derridean deconstruction. Following criticisms that the theory of hegemony overlooks the aporetic nature of Derridean undecidability that it nevertheless relies (...) upon, the hegemonic logic is submitted to a deconstructive reading, which reveals an internal aporia in it. It is further argued that the unaccounted aporia in the logic of hegemony explains the theory’s inability to satisfactorily account for its essential theoretical underpinning, the radical exclusion. However, the article also demonstrates that the aporia does not destroy hegemonic logic but, instead, supplements it by a normative dimension, by a demand of opening to the other as other. (shrink)